Includes Flat Head Screwdriver, 1/2 and 3/8 Torque Interfaces, 3/4 and 5/8 Wrenches in addition to Wrenches Specific for the USGI Barrel Nut, Castle Nut, and A1 3-prong Flash Hider. Steel Construction with Wear Resistant Phosphate Finish for Long Lasting Durability